考虑中间主应力的隧道洞口土体可靠度研究

黄志波; 崔广强; 郑强

doi:10.3969/j.issn.2095-476X.2015.3/4.024

CN 41-1437/TS ISSN 2096-1553

考虑中间主应力的隧道洞口土体可靠度研究

黄志波 , 崔广强 , 郑强

黄志波, 崔广强, 郑强. 考虑中间主应力的隧道洞口土体可靠度研究[J]. 轻工学报, 2015, 30(3-4): 108-111,141. doi: 10.3969/j.issn.2095-476X.2015.3/4.024

引用本文: 黄志波, 崔广强, 郑强. 考虑中间主应力的隧道洞口土体可靠度研究[J]. 轻工学报, 2015, 30(3-4): 108-111,141. doi: 10.3969/j.issn.2095-476X.2015.3/4.024

HUANG Zhi-bo, CUI Guang-qiang and ZHENG Qiang. Study on the reliability of soil at the tunnel hole considering effect of intermediate principal stress[J]. Journal of Light Industry, 2015, 30(3-4): 108-111,141. doi: 10.3969/j.issn.2095-476X.2015.3/4.024

Citation: HUANG Zhi-bo, CUI Guang-qiang and ZHENG Qiang. Study on the reliability of soil at the tunnel hole considering effect of intermediate principal stress[J]. Journal of Light Industry, 2015, 30(3-4): 108-111,141. doi: 10.3969/j.issn.2095-476X.2015.3/4.024

考虑中间主应力的隧道洞口土体可靠度研究

福建农林大学金山学院, 福建福州 350002;
福建省建专岩土工程有限公司, 福建福州 350002
中图分类号: TU443

Study on the reliability of soil at the tunnel hole considering effect of intermediate principal stress

College of Jinshan, Fujian Agriculture and Forestry University, Fuzhou 350002, China;
Fujian Jianzhuan Geotechnical Engineering Co., Ltd., Fuzhou 350002, China
Received Date: 2014-09-11
Available Online: 2015-09-15
CLC number: TU443

摘要: 根据统一强度理论和摩尔库伦强度理论,推导考虑中间主应力时土体的功能函数,基于验算点法编制相应的Matlab程序计算隧道洞口松散土体的塌方概率,进而研究中间主应力对土体可靠度的影响.结论是:考虑中间主应力可以降低隧道洞口土体的塌方概率,充分发挥材料的强度,节约工程费用;当b=0或t=0或t=1时,土体的塌方概率与未考虑中间主应力时相等且为最大值;土体塌方概率随t的增大先减小后增大,随着b的增大而减小,故对于b,t的取值要格外慎重.本研究成果对准确评价隧道稳定性具有重要意义.
- 统一强度理论 /
- 摩尔库伦强度理论 /
- 中间主应力 /
- 土体可靠度 /
- 塌方概率
Abstract: According to the unified strength theory and Mohr coulomb theory,the function of soil was deduced considering the intermediate principal stress,and the soil collapse probability at the tunnel hole was derivated from Matlab program based on design point method in order to analyze the influence of intermediate principal stress made on reliability of soil.The results showed that:firstly,considering that effect of intermediate principal stress could reduce the soil collapse probability at the tunnel hole and give the potential of material into full play,the project expense could be saved; secondly,when b=0 or t=0 or t=1,the probability value of soil collapse was equal to the value under the circumstance of taking no account of the intermediate principal stress,at the meantime,the value could be the maximum one; thirdly,the soil collapse probability would change over the numerical value of b and t,generally speaking, the probability would decrease and then increase with the rise of the numerical value of t,while the probability would decrease with the rise of the numerical value of b,therefore the value of b and t should be considered carefully,which had important significance for accurate evaluation of tunnel stability.
- unified strength theory /
- Mohr coulomb strength theory /
- intermediate principal stress /
- reliability of soil /
- collapse probability
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黄志波, 崔广强, 郑强. 考虑中间主应力的隧道洞口土体可靠度研究[J]. 轻工学报, 2015, 30(3-4): 108-111,141. doi: 10.3969/j.issn.2095-476X.2015.3/4.024

引用本文: 黄志波, 崔广强, 郑强. 考虑中间主应力的隧道洞口土体可靠度研究[J]. 轻工学报, 2015, 30(3-4): 108-111,141. doi: 10.3969/j.issn.2095-476X.2015.3/4.024

考虑中间主应力的隧道洞口土体可靠度研究

福建农林大学金山学院, 福建福州 350002;
福建省建专岩土工程有限公司, 福建福州 350002

收稿日期: 2014-09-11
网络出版日期: 2015-09-15

关键词:

摘要: 根据统一强度理论和摩尔库伦强度理论,推导考虑中间主应力时土体的功能函数,基于验算点法编制相应的Matlab程序计算隧道洞口松散土体的塌方概率,进而研究中间主应力对土体可靠度的影响.结论是:考虑中间主应力可以降低隧道洞口土体的塌方概率,充分发挥材料的强度,节约工程费用;当b=0或t=0或t=1时,土体的塌方概率与未考虑中间主应力时相等且为最大值;土体塌方概率随t的增大先减小后增大,随着b的增大而减小,故对于b,t的取值要格外慎重.本研究成果对准确评价隧道稳定性具有重要意义.

English Abstract

Study on the reliability of soil at the tunnel hole considering effect of intermediate principal stress

College of Jinshan, Fujian Agriculture and Forestry University, Fuzhou 350002, China;
Fujian Jianzhuan Geotechnical Engineering Co., Ltd., Fuzhou 350002, China

Received Date: 2014-09-11
Available Online: 2015-09-15

Abstract: According to the unified strength theory and Mohr coulomb theory,the function of soil was deduced considering the intermediate principal stress,and the soil collapse probability at the tunnel hole was derivated from Matlab program based on design point method in order to analyze the influence of intermediate principal stress made on reliability of soil.The results showed that:firstly,considering that effect of intermediate principal stress could reduce the soil collapse probability at the tunnel hole and give the potential of material into full play,the project expense could be saved; secondly,when b=0 or t=0 or t=1,the probability value of soil collapse was equal to the value under the circumstance of taking no account of the intermediate principal stress,at the meantime,the value could be the maximum one; thirdly,the soil collapse probability would change over the numerical value of b and t,generally speaking, the probability would decrease and then increase with the rise of the numerical value of t,while the probability would decrease with the rise of the numerical value of b,therefore the value of b and t should be considered carefully,which had important significance for accurate evaluation of tunnel stability.